123 lines
4.4 KiB
TypeScript
123 lines
4.4 KiB
TypeScript
import path from 'path'
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import chai from 'chai'
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import { solidity, createMockProvider, getWallets, deployContract } from 'ethereum-waffle'
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import { Contract } from 'ethers'
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import { AddressZero, MaxUint256 } from 'ethers/constants'
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import { bigNumberify, hexlify } from 'ethers/utils'
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import { ecsign } from 'ethereumjs-util'
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import { expandTo18Decimals, getApprovalDigest } from './shared/utilities'
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import ERC20 from '../build/ERC20.json'
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chai.use(solidity)
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const { expect } = chai
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const TOKEN_DETAILS = {
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name: 'Test Token',
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symbol: 'TEST',
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decimals: 18,
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totalSupply: expandTo18Decimals(1000)
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}
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const TEST_AMOUNT = expandTo18Decimals(10)
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describe('ERC20', () => {
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const provider = createMockProvider(path.join(__dirname, '..', 'waffle.json'))
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const [wallet, other] = getWallets(provider)
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let token: Contract
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beforeEach(async () => {
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token = await deployContract(wallet, ERC20, [
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TOKEN_DETAILS.name,
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TOKEN_DETAILS.symbol,
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TOKEN_DETAILS.decimals,
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TOKEN_DETAILS.totalSupply
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])
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})
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it('name, symbol, decimals, totalSupply', async () => {
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expect(await token.name()).to.eq(TOKEN_DETAILS.name)
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expect(await token.symbol()).to.eq(TOKEN_DETAILS.symbol)
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expect(await token.decimals()).to.eq(TOKEN_DETAILS.decimals)
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expect(await token.totalSupply()).to.eq(TOKEN_DETAILS.totalSupply)
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})
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it('transfer', async () => {
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await expect(token.transfer(other.address, TEST_AMOUNT))
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.to.emit(token, 'Transfer')
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.withArgs(wallet.address, other.address, TEST_AMOUNT)
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expect(await token.balanceOf(wallet.address)).to.eq(TOKEN_DETAILS.totalSupply.sub(TEST_AMOUNT))
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expect(await token.balanceOf(other.address)).to.eq(TEST_AMOUNT)
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})
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it('burn', async () => {
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await expect(token.burn(TEST_AMOUNT))
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.to.emit(token, 'Transfer')
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.withArgs(wallet.address, AddressZero, TEST_AMOUNT)
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expect(await token.balanceOf(wallet.address)).to.eq(TOKEN_DETAILS.totalSupply.sub(TEST_AMOUNT))
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expect(await token.totalSupply()).to.eq(TOKEN_DETAILS.totalSupply.sub(TEST_AMOUNT))
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})
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it('approve', async () => {
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await expect(token.approve(other.address, TEST_AMOUNT))
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.to.emit(token, 'Approval')
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.withArgs(wallet.address, other.address, TEST_AMOUNT)
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expect(await token.allowance(wallet.address, other.address)).to.eq(TEST_AMOUNT)
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})
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it('approveMeta', async () => {
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const nonce = await token.nonces(wallet.address)
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const expiration = MaxUint256
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const digest = await getApprovalDigest(
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token,
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{ owner: wallet.address, spender: other.address, value: TEST_AMOUNT },
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nonce,
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expiration
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)
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const { v, r, s } = ecsign(Buffer.from(digest.slice(2), 'hex'), Buffer.from(wallet.privateKey.slice(2), 'hex'))
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await expect(
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token.approveMeta(wallet.address, other.address, TEST_AMOUNT, nonce, expiration, v, hexlify(r), hexlify(s))
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)
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.to.emit(token, 'Approval')
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.withArgs(wallet.address, other.address, TEST_AMOUNT)
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expect(await token.nonces(wallet.address)).to.eq(bigNumberify(1))
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expect(await token.allowance(wallet.address, other.address)).to.eq(TEST_AMOUNT)
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})
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it('transferFrom', async () => {
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await token.approve(other.address, TEST_AMOUNT)
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await expect(token.connect(other).transferFrom(wallet.address, other.address, TEST_AMOUNT))
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.to.emit(token, 'Transfer')
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.withArgs(wallet.address, other.address, TEST_AMOUNT)
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expect(await token.allowance(wallet.address, other.address)).to.eq(0)
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expect(await token.balanceOf(wallet.address)).to.eq(TOKEN_DETAILS.totalSupply.sub(TEST_AMOUNT))
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expect(await token.balanceOf(other.address)).to.eq(TEST_AMOUNT)
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})
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it('burnFrom', async () => {
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await token.approve(other.address, TEST_AMOUNT)
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await expect(token.connect(other).burnFrom(wallet.address, TEST_AMOUNT))
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.to.emit(token, 'Transfer')
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.withArgs(wallet.address, AddressZero, TEST_AMOUNT)
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expect(await token.allowance(wallet.address, other.address)).to.eq(0)
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expect(await token.balanceOf(wallet.address)).to.eq(TOKEN_DETAILS.totalSupply.sub(TEST_AMOUNT))
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expect(await token.totalSupply()).to.eq(TOKEN_DETAILS.totalSupply.sub(TEST_AMOUNT))
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expect(await token.balanceOf(other.address)).to.eq(0)
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})
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it('transfer:fail', async () => {
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await expect(token.transfer(other.address, TOKEN_DETAILS.totalSupply.add(1))).to.be.revertedWith(
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'ds-math-sub-underflow'
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)
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await expect(token.connect(other).transfer(wallet.address, 1)).to.be.revertedWith('ds-math-sub-underflow')
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})
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})
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